Sei K, et al. - In view of the common occurrence of uterine leiomyoma, and its association as a risk factor for various complications during pregnancy and peripartum period, researchers assessed if characteristics of leiomyoma and pregnant patients could predict massive haemorrhage in women undergoing caesarean delivery. During caesarean delivery, the presence of a leiomyoma of ≥175 cm³, birth weight of ≥2500 g, and primipara were observed to be predictive of massive intraoperative haemorrhage. In the first trimester, a leiomyoma ≥175 cm³ which is equivalent volume to a 7 cm diameter sphere could be diagnosed using sonography. They suggested considering preparation for massive haemorrhage, including storage of autologous blood in cases of cesarean delivery with these predictors.